NEET-UG Biology · Class 11
Cell theory and its exceptions — NEET & JEE Questions
Cell theory and its exceptions is a topic in Cell: The Unit of Life, a Class 11 Biology chapter of the NEET-UG syllabus. TestBudy holds 13 published NEET-UG questions on Cell theory and its exceptions, each with the marking scheme of the real paper.
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Cell theory and its exceptions MCQs with solutions
10 of the 13 published questions on this topic, exactly as they appear in a test. Answers and worked solutions come with your result rather than on this page.
Who stated that all plants are composed of cells?
- A. Theodor Schwann
- B. Matthias Schleiden
- C. Rudolf Virchow
- D. Robert Brown
Which statement added by Rudolf Virchow completed the basic cell theory?
- A. All cells contain a nucleus
- B. Cells arise from pre-existing cells
- C. All cells have a cell wall
- D. Cells are always independent organisms
A central statement of modern cell theory is that new cells arise from
- A. pre-existing cells
- B. nonliving matter spontaneously in normal organisms
- C. viruses only
- D. cell walls without cytoplasm
Viruses are often discussed as an exception or borderline case to cell theory because they
- A. are acellular and replicate only inside host cells
- B. are made of many ordinary cells
- C. contain no genetic material
- D. carry out complete independent metabolism
A biological structure can reproduce only inside a host cell and lacks independent cellular organisation. Why is it not treated as a typical cell in classical cell theory?
- A. It is too small to be considered living
- B. It lacks cellular organisation and independent metabolism
- C. It contains genetic material
- D. It can evolve
In tissue culture experiments, leaf mesophyll cells are put in a culture medium to form callus. This phenomenon may be called as
- A. Dedifferentiation
- B. Development
- C. Senescence
- D. Differentiation
Which of the following functions is carried out by cytoskeleton in a cell?
- A. Protein synthesis
- B. Motility
- C. Transportation
- D. Nuclear division
The Phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as
- A. Secondary growth
- B. Differentiation
- C. Dedifferentiation
- D. Redifferentiation
Which type of substance would face difficulty to pass through the cell membrane?
- A. Substance soluble in lipids
- B. Substance with hydrophobic moiety
- C. Substance with hydrophilic moiety
- D. All substance irrespective of hydrophobic and hydrophilic moiety
An organism is made of many specialised cells, while a second living entity is a single cell that performs all essential life functions. Which principle of cell theory applies to both?
- A. The cell is the basic structural and functional unit of life
- B. Only multicellular organisms are cellular
- C. A cell must always be specialised for one function
- D. Single cells cannot maintain independent life
Common mistakes in Cell theory and its exceptions
Recorded against questions in this topic that are not shown above, so none of these points at an answer you can see on this page.
- Using the presence of familiar cellular components as sufficient proof that the entire entity is a cell.
- Assumes the theory requires all cells to look or function identically.
- Assumes absence of a nucleus means a structure cannot be a cell.
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